Neoproterozoic–paleozoic detrital sources in the Variscan foreland of northern Iberia: primary v. recycled sediments

Author:

Gutiérrez-Alonso G.12ORCID,López-Carmona A.12ORCID,Núñez-Guerrero E.1ORCID,Martínez García A.1,Fernández-Suárez J.34,Pastor-Galán D.5ORCID,Gutiérrez-Marco J. C.4ORCID,Bernárdez E.6ORCID,Colmenero J. R.1,Hofmann M.7ORCID,Linnemann U.7

Affiliation:

1. Geology Department, Faculty of Science, University of Salamanca, Plaza de la Merced s/n, 37008, Salamanca, Spain

2. Laboratory of Structural Petrology, Faculty of Geology and Geography, Tomsk State University, 36 Lenin Avenue, 634050, Tomsk, Russia

3. Mineralogy and Petrology Department, Faculty of Geology, Complutense University of Madrid; Calle José Antonio Novais, 12, 28040 Madrid, Spain

4. Instituto de Geociencias (CSIC, UCM), 28040 Madrid, Spain

5. CNEAS, Tohoku University, 41 Kawauchi, Aoba-ku, Sendai, Japan

6. INSUGEO Sede Miguel Lillo, Miguel Lillo 205 (CP 4000) San Miguel de Tucumán, Argentina

7. Senckenberg Naturhistorische Sammlungen Dresden, Museum für Mineralogie und Geologie, Sektion Geochronologie, Königsbrücker Landstraße 159, 01109 Dresden, Germany

Abstract

Abstract The Cantabrian Zone, in the Variscan belt of Western Europe, has one of the most continuous Ediacaran–Paleozoic stratigraphic successions in the world. This succession has been extensively studied, including several detrital zircon U–Pb geochronological studies on 30 samples spanning the aforementioned time slice. In this work, we present data from three new samples covering previously unsampled time-slices and perform multidimensional analysis on the 33 samples in order to quantify the similarity/dissimilarity among all of them with the aim of detecting potential changes in source areas through time and the role of recycling. The results indicate a continuous source of sediments from Ediacaran to late Devonian times punctuated by a sudden ephemeral change in the Early Cambrian that can be attributed to local causes during the inception of the Paleozoic passive margin.

Publisher

Geological Society of London

Subject

Geology,Ocean Engineering,Water Science and Technology

Reference130 articles.

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